/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.gds.procedures.pipelines;

import org.neo4j.gds.api.User;
import org.neo4j.gds.ml.pipeline.PipelineCatalog;
import org.neo4j.gds.ml.pipeline.nodePipeline.classification.NodeClassificationTrainingPipeline;

import java.util.Map;
import java.util.stream.Stream;

import static org.neo4j.gds.ml.pipeline.NodePropertyStepFactory.createNodePropertyStep;

/**
 * Lifecycle: request - newed up on each request
 */
public class PipelinesProcedureFacade {
    private final User user;

    public PipelinesProcedureFacade(User user) {
        this.user = user;
    }

    public Stream<NodePipelineInfoResult> addNodeProperty(
        String pipelineName,
        String taskName,
        Map<String, Object> procedureConfig
    ) {
        var pipeline = PipelineCatalog.getTyped(
            user.getUsername(),
            pipelineName,
            NodeClassificationTrainingPipeline.class
        );

        var nodePropertyStep = createNodePropertyStep(taskName, procedureConfig);

        pipeline.addNodePropertyStep(nodePropertyStep);

        return Stream.of(new NodePipelineInfoResult(pipelineName, pipeline));
    }
}
